I'm probably unusual, but I noticed clear benefits within a week. Though, I was meditating while waking up first thing every morning, and the initial benefits

I'm probably unusual, but I noticed clear benefits within a week. Though, I was meditating while waking up first thing every morning, and the initial benefits was not immediately obvious except that I could lower my ADHD med dosage by a couple of mg and get the same effect. Instead of trying to magically concentrate perfectly, I focused on identifying when my focus would move to something else. I noticed meditation is a practice of becoming quicker at identifying when I would lose focus, giving me the choice to come back to focus. After a couple of months of meditating I was able to go off of adhd medication. Then maybe a half a year later I noticed my concentration was above average and had been for a while. Meditation does work well on ADHD, but you have to be willing to take a break from your day to day worries, giving a mini vacation away from mental work. It's quite enjoyable.